The Toto OEM Adjustable Universal Fill Valve Assembly is a one-piece unit designed for easy DIY installation in the bathroom. Made of plastic and featuring an adjustable height, this fill valve assembly is suitable for various Toto models and offers a G Connector outlet connection size of 7/8 inches. The package includes a cone washer, valve, refill tube and clamp, and nut for a complete and efficient restoration of optimal toilet performance.